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Post by holmz on Feb 17, 2016 4:20:29 GMT -5
If you need one made out of composite I can do that is you have a mould or the part.
If you get it looking like it should maybe a mould and then I can do a dozen.
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Post by reflector on Feb 17, 2016 23:03:37 GMT -5
Jonathan have you considered "sealing" the sliding housing against the table where the gap is formed using soft doorsweeps or anything to reduce the gap near the cutting edge? With the suction directed towards the front of the sawblade and the natural airflow, that should be able to assist in the "suction" power.
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Post by Eoj on Feb 28, 2016 11:05:50 GMT -5
Hey jonathan Check out this dust hood Felder blade hood . Reasonable price tag , has larger dust port and a deeper radius for larger blades . |
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Post by GhostFist on Feb 28, 2016 12:56:16 GMT -5
BOOM! This is why we have this forum. does it fit?
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Post by Eoj on Feb 28, 2016 14:22:27 GMT -5
BOOM! This is why we have this forum. does it fit? Always look for solutions beyond the tool brand offerings , have many cross breed tool set-ups......make it work! As to the Felder dust hood working on the Erika , Felder 250mm blade 3.2mm blade 2.2mm blade body Mafell 250mm blade 2.8mm blade 1.8mm blade body The "0.4" mm difference should work , maybe a fiber washer as a shim . Looks promising as a upgrade . |
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Post by holmz on Feb 28, 2016 17:02:32 GMT -5
BOOM! This is why we have this forum. does it fit? Always look for solutions beyond the tool brand offerings , have many cross breed tools set-ups......make it work! As to the Felder dust hood working on the Erika , Felder 250mm blade 3.2mm blade 2.2mm blade body Mafell 250mm blade 2.8mm blade 1.8mm blade body The "0.4" mm difference should work , maybe a fiber washer as a shim . Looks promising as a upgrade . So both blades cut 0.5-mm to the side of the arbor. Does one even need a shim? |
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Post by Eoj on Feb 28, 2016 17:37:23 GMT -5
The potential for a shim would be used on the riving knife dust hood attachment , not the blade .
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Post by jonathan on Feb 29, 2016 5:11:58 GMT -5
I've been wondering if the blade guard from sawstop's cabinet saw would fit. I don't suppose anyone has one lying around to test it out?
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Post by GhostFist on Feb 29, 2016 5:30:22 GMT -5
Sadly I don't and usually I do. I just started a new production team I'm running and we're on borrowed cabinet saws,not sawstop...yet. It was all kind of sudden so we had to rent some equipment off of other teams in order to equip our shop. Totally off topic.
I was looking at the sawstop guards thinking the same thing last night though
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Post by jonathan on May 8, 2016 3:41:50 GMT -5
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Post by reflector on May 11, 2016 8:59:35 GMT -5
Best of luck with the custom blade housing solution. I have been experimenting with my Bosch 4100 to pull the suction up towards the front of the ZCI to emulate the MT55cc's suction channel. It works great with full sealing under the table.
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Post by GhostFist on May 11, 2016 11:46:26 GMT -5
You have pictures of that set up?
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Post by reflector on May 11, 2016 12:23:05 GMT -5
Two photos: First shows the front area Second shows the mid-rear area and a pile of sawdust The tube is made out of pool vacuum hose that's been quartered and taped on using aluminum HVAC tape (And covered in it for abrasion resistance). There's two pieces of tubing, the one that runs from the front down to the bottom and the other diverts half of the suction port towards the tubing leading up to the front. I deliberately left them disconnected/"open" like that so some of the airflow from the blade would hit the area where the pile of sawdust is and help accelerate the airflow. The pile of sawdust is actually normal and goes away in operation and occasionally will build up again if I make short rip cuts. When the saw is cutting and I have the vacuum running the pile clears up from the force of sawdust hitting it. I'm thinking about reworking the way the second part of the tube is made. The biggest difference for me on the Bosch 4100 is that I sealed the blade housing and motor mount to the top of the table using flexible shelf liner to preserve the tilting capability. The problem with the Bosch 4100 as far as I can tell is that there's nothing really connecting the bottom right and front of the shroud to the bottom of the table. The other problem spot is the hole where the arbor passes through but that's a secondary problem. I was thinking that with the Erika if you had some kind of thin piece of flexible plastic (Like the kind used for clamshell packaging) on taped on the outside of the sawblade housing, it would direct sawdust going beneath right into the shroud. It wouldn't interfere with the sliding or tilt at all. Ducting the inside of the shroud would then basically pull the suction right up to where the cut exits and with the help of the air movement from the sawblade I suspect it would capture more or less all the dust beneath. Attachments:
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Post by reflector on Dec 3, 2016 5:51:34 GMT -5
Jonathan regarding the overhead dust collection: I believe you could improve the Erika's performance at the end of cut if you were to make an overhead guard that has three of these design features: 1. Tipping side wings (Something I need to build for a revised prototype along with an overhead arm version of it) 2. Significant extension of the nose up front 3. Have it be freely moving/rotating 4. Optionally it should be of a design that has a U bend or something that causes the airflow off the blade to redirect inside of the guard. I find that kind of design tends to reduce the suction losses. I have built myself a prototype overhead guard for my Bosch 4100 that slips onto the riving knife. It is placed far up front so when a workpiece is about to exit the cut (Any crosscut or rip) the front of the guard tips down and touches the table. Seeing the performance of the Erika's dust guard, it seems to do well up until the blade exits the rear of the workpiece, wherein you get that exit spray. If the guard were to freely tip down (With an elongated front so it can tip down and side wings to assist in sealing towards the front) then you would capture practically all the dust. I'll upload a pictures and video of the ugly prototype I made for my Bosch. The only thing it won't address is when you make a cut where both sides of the blade aren't fully captured. I found that a quick solution to that is to make a "L" out of some scraps placed ontop of the table that closes off the side and the front with a millimeter or two of clearance on the front piece from the side of the workpiece to avoid pushing it in. Next time I'll just make something that sticks into the miter gauge slot of my Bosch that lets me adjust it to the height of the cut.   |
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Post by reflector on Jun 7, 2017 15:57:03 GMT -5
I still don't own an Erika and Mafell is making it hard by only offering the Erika 85 in 220V only and it doesn't look like they'll change their minds about it. I've already moved to the point of "acceptance" by procuring a brushless angle grinder with an intent to make it into a motor of a portable tablesaw made out of aluminum extrusions and linear motion elements to make my own "Erika" since 120V operation is a requirement for me. I did however, experiment more with the home made splitter I have for that prototype guard (As well as peeled off all the protective plastic over it). Instead the normal splitter directing a huge amount of airflow into the shroud of the saw, I put a small piece of plastic inside so the airflow is somewhat more "choked" on the saw side and directed more to the guard. What a difference that made, I can drop sawdust next to the guard near where the intake is and watch it get sucked in from a half inch away and even further. Didn't notice any problems with dust building up in the shroud either since there was still more than sufficient airflow. Curious as to what the Mafell splitter looks like, maybe a simple modification to divert more airflow to the overhead guard (As well as putting some baffling into it to pull the airflow all the way towards the front of the guard) would solve a lot of overhead dust collection problems? Photos will follow later after I take them and edit them into this post. Edit: mafell-users-forum.freeforums.net/post/16680/thread |
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